.\" "
.\" " Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
.\" " Use is subject to license terms.
.\" "
.\" " CDDL HEADER START
.\" "
.\" " The contents of this file are subject to the terms of the
.\" " Common Development and Distribution License (the "License").
.\" " You may not use this file except in compliance with the License.
.\" "
.\" " You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
.\" " or http://www.opensolaris.org/os/licensing.
.\" " See the License for the specific language governing permissions
.\" " and limitations under the License.
.\" "
.\" " When distributing Covered Code, include this CDDL HEADER in each
.\" " file and include the License file at usr/src/OPENSOLARIS.LICENSE.
.\" " If applicable, add the following below this CDDL HEADER, with the
.\" " fields enclosed by brackets "[]" replaced with your own identifying
.\" " information: Portions Copyright [yyyy] [name of copyright owner]
.\" "
.\" " CDDL HEADER END
.\" "
.\" ident	"%Z%%M%	%I%	%E% SMI"
.TH webrev 1 "1 December 2006"
.SH NAME
webrev \- Generate HTML codereview materials
.SH SYNOPSIS
.B webrev
[
.I common-options
]

.B webrev
[
.I common-options
]
.I file-list-file
|
.I -

.B webrev
[
.I common-options
]
.B -w
.I wx-file

.B webrev 
[
.I common-options
]
.B -l
.I arguments to 'putback'

See OPTIONS for common-options.

.SH DESCRIPTION
.B webrev
builds a set of HTML files suitable for performing code review of
source changes in a web browser.  At its most basic, usage is:
.nf
        $ webrev
.fi

In which case \fBwebrev\fR attempts to figure out the list of files
for review (note that when using Teamware \fBputback\fR, this may take
a long time; see the -l option).  If that fails, or if more control
over the set of files is needed, a \fIfile list\fR may be specified.
\fBwebrev\fR also attempts to deduce a
.I basis for comparison
(interchangeably called the \fIparent\fR, but see SCM INTERACTIONS below).
A basis for comparison is needed in order to determine the differences
introduced by the code changes under review.

By default, \fBwebrev\fR creates a \fIwebrev\fR directory in the
workspace directory that contains the generated HTML files, a generated
PDF review, and a patch representing the changes.  It also places a
copy of the file list in that directory, and of both the old and new
raw files in the \fB$webrev_root/raw_files\fR directory.
To output the webrev somewhere other than the default location, use the
\fI-o <outdir>\fR option, or set the \fBWDIR\fR environment variable.
For example:
.nf
        $ webrev -o ~/public_html/myreview/
.fi
.PP
In the index file, each file is listed on a line with a link to the
relevant review materials.  Comments for each delta will be included
automatically.  Bug numbers (any sequence of 5 or more digits) and ARC
cases (ARC name followed by year/number, e.g. PSARC/2003/436) in the
comment will become hyperlinks in the associated web interface.

As a review aid, content may be added to the \fIindex\fR file in two ways.
First, the author may manually edit the file (for example by including
text that explains the changes in front of the links for each file).
Note that if webrev is run again, manual edits will be lost.  Second,
if a file named \fIwebrev-info\fR is present at the root of the workspace,
it will be automatically included in the \fIindex\fR file.  To include a
different file, see the \fI-i\fR option.

For each file in the file list, \fBwebrev\fR compares the file with the
version in the basis for comparison (i.e. the parent workspace) and
generates a variety of HTML renderings of the differences between
the two files; which of these renderings to use is largely a matter
of personal preference.  Additional, webrev emits a patch, the old
and new versions of the file, and a "raw" copy of the file which is
suitable for download.  For files which express differences, source
is formatted according to the following color coding:
.IP
.nf
     unchanged : black
       removed : brown
       changed : blue
           new : bold blue
.fi

.SH SCM INTERACTIONS
.PP
.B webrev
attempts to interact with the source code management system currently in use.  
.B webrev
needs to be able locate the code under review (i.e. the workspace) and
the basis for comparison (i.e. the parent).  The method for doing so
depends upon the SCM in use, which
.B webrev
will also attempt to auto-discover.  In all cases,
.B webrev
must either discover the list of files which have changed, or else this list
must be manually specified, either in "webrev file list" format or in "wx"
format.  See FILE LIST for more details.

.SS Teamware
In the case of Teamware, if the user has already activated the workspace
with the
.BR ws (1)
command or set the
.B CODEMGR_WS
environment variable, then
.B webrev
will use the
.B CODEMGR_WS
environment variable.  To manually set the basis for
comparison, use the -p option, or specify the
.B CODEMGR_PARENT
variable in the file list.

To direct \fBwebrev\fR to determine the file list from
.BR putback (1),
use the -l option.  (Note that \fBwebrev\fR may also elect to use
\fBputback\fR if it cannot determine the file list from
.BR wx (1)).
The -l option indicates that subsequent arguments should be
treated as arguments to
.BR putback (1).
This can be used to prune the set of files which putback examines,
or to reference a teamware flp (file list program).

.SH OPTIONS
.TP 10
.BI "-w " wx-file
Extract the file list from the wx "active" file specified.  'wx' uses
this mode when invoking webrev.  The list is assumed to be in the
format expected by the \fIwx\fR package.  See FILE LIST, below.
.TP 10
.BI "-l " putback-args
Extract the file list from the output of 
.I putback -n.
Any arguments supplied will be passed to
.BR putback (1).
See SCM INTERACTIONS.  For more information about file
lists, see FILE LIST.  This argument should appear last.
.TP 10
.B -O
Enable \fIOpenSolaris\fR mode: bug links are generated relative to
\fIbugs.opensolaris.org\fR, SAC links are generated relative to
\fIwww.opensolaris.org\fR, and sources which appear in \fIusr/closed\fR
are automatically elided from the review.
.TP 10
.BI "-i " include-file
Include the specified file into the index.html file which is generated
as part of the webrev.  This allows a snippet of XHTML to be added by
the webrev author. User content is contained by a <div> tag and
the markup should validate as XHTML 1.0 Transitional.
.TP 10
.BI "-o " output-dir
Place output from running the script in the directory specified.  If
specified, this option takes precedence over the WDIR environment variable.
.TP 10
.BI "-p " basis-of-comparison
Specify a basis of comparison meaningful for the SCM currently in use.
See SCM INTERACTIONS and INCREMENTAL REVIEWS.

.SH FILE LIST
.PP
.B Webrev
needs to be told or to discover which files have changed in a
given workspace.  By default,
.B webrev
will attempt to autodetect the
list of changed files by first consulting
.BR wx(1).
If this information is not available, webrev tries to consult the SCM (Source
Code Manager) currently in use.  If that fails, the user must intervene by
specifying either a file list or additional options specific to the SCM in use.

.SS Webrev Format
A webrev formatted file list contains a list of all the files to
be included in the review with paths relative to the workspace
directory, e.g.
.IP
.nf
\f(CWusr/src/uts/common/fs/nfs/nfs_subr.c
usr/src/uts/common/fs/nfs/nfs_export.c
usr/src/cmd/fs.d/nfs/mountd/mountd.c
.fi
.PP
Include the paths of any files added, deleted, or modified.
You can keep this list of files in the webrev directory
that webrev creates in the workspace directory
(CODEMGR_WS).

If CODEMGR_WS is not set, it may be specified as an environment variable
within the file list, e.g.
.IP
.nf
\f(CWCODEMGR_WS=/home/brent/myws
usr/src/uts/common/fs/nfs/nfs_subr.c
usr/src/uts/common/fs/nfs/nfs_export.c
usr/src/cmd/fs.d/nfs/mountd/mountd.c
.fi
.PP
To compare the workspace against one other than the parent (see also
the -p option), include a CODEMGR_PARENT line in the file list, like:
.IP
.nf
\f(CWCODEMGR_WS=/home/brent/myws
CODEMGR_PARENT=/ws/onnv-gate
usr/src/uts/common/fs/nfs/nfs_subr.c
usr/src/uts/common/fs/nfs/nfs_export.c
usr/src/cmd/fs.d/nfs/mountd/mountd.c
.fi
.PP
Finally, run webrev with the name of the file containing the file list as an
argument, e.g.
.nf
        $ webrev file.list
.fi
.PP
If "-" is supplied as the name of the file, then stdin will be used.

.SS wx Format
If the \fI-w\fR flag is specified then \fBwebrev\fR
will assume the file list is in the format expected by the "wx" package:
pathname lines alternating with SCCS comment lines separated by blank
lines, e.g.
.IP
.nf
\f(CWusr/src/uts/common/fs/nfs/nfs_subr.c

1206578 Fix spelling error in comment

usr/src/uts/common/fs/nfs/nfs_export.c

4039272 cstyle fixes

usr/src/cmd/fs.d/nfs/mountd/mountd.c

1927634 mountd daemon doesn't handle expletives
.fi

.SH INCREMENTAL REVIEWS
When conducting multiple rounds of code review, it may be desirable to
generate a webrev which represents the delta between reviews.  In this
case, set the parent workspace to the path to the old webrev:

.IP
.nf
\f(CW$ webrev -o ~/public_html/myreview-rd2/ \\
         -p ~/public_html/myreview/
.fi

.SH ENVIRONMENT VARIABLES
The following environment variables allow for customization of \fBwebrev\fR:

.PP
\fBCDIFFCMD\fR and \fBUDIFFCMD\fR are used when generating Cdiffs and Udiffs
respectively; their default values are "diff -b -C 5" and "diff -b -U
5".  To generate diffs with more (or less) than 5 lines of context or
with more (or less) strict whitespace handling, set one or both of
these variables in the user environment accordingly.

\fBWEBREV_BUGURL\fR may be set to an alternate bug-to-HTML interface
(providing the BUG number can be appended to the URL).  The default
URL is "http://monaco.sfbay.sun.com/detail.jsp?cr=".

\fBWDIR\fR sets the output directory.  It is functionally equivalent to
the \fI-o\fR option.

\fBWDIFF\fR specifies the command used to generate Wdiffs. Wdiff generates a
full unified context listing with line numbers where unchanged
sections of code may be expanded and collapsed.  It also provides a
"split" feature that shows the same file in two HTML frames one above the
other.  The default path for this script is
/ws/onnv-gate/public/bin/wdiff but WDIFF may be set to customize this
to use a more convenient location.

.SH ACKNOWLEDGEMENTS
Acknowledgements to Rob Thurlow, Mike Eisler, Lin Ling,
Rod Evans, Mike Kupfer, Greg Onufer, Glenn Skinner,
Oleg Larin, David Robinson, Matthew Cross, David L. Paktor,
Neal Gafter, John Beck, Darren Moffat, Norm Shulman, Bill Watson,
Pedro Rubio and Bill Shannon for valuable feedback and insight in
building webrev.

Have fun!
.br
		Brent Callaghan  11/28/96